US emissions hit 20-year low due to economy, mild weather

First quarter 2012 US CO 2 emissions resulting from energy use were the lowest in two decades for that part of the year, due to a mild winter, reduced coal use for power generation and less demand for motor fuel, says the Energy Department (DOE).

The US Energy Information Administration (EIA), DOE’s statistical arm, says that mild winter temperatures cut energy use by lowering home heating demand. Historically low natural gas prices led utilities to burn less coal, which has the highest carbon intensity among major fossil fuels.

The EIA notes that higher petrol prices led to less driving nationwide, as Americans turned to car-pooling and public transport, and companies encouraged employees to work from home. Improved fuel efficiency standards also helped reduce consumption.

CO 2 emissions from energy consumption totaled 1,340 million tonnes during the first…

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